A. 60 kmph
B. 10 kmph
C. 30 kmph
D. 5 kmph
Explanation:
US = 25
DS = 35
M = (35 + 25)/2 = 30
A. 10%
B. 15%
C. 20%
D. 25%
Explanation:
Let C.P of each mango = Rs. 1
C.P of 320 mangoes = Rs. 320
S.P of 320 mangoes = Rs. 400
Gain = (80/320 × 100)% = 25 %
A. Rs.2000
B. Rs.1980
C. Rs.1891
D. Rs.1750
Explanation:
(10*10)/100 = 1%loss
100 — 99
? — 1980 => Rs.2000
A. 31/32
B. 1/16
C. 1/2
D. 1/32
Explanation:
Let P(T) be the probability of getting least one tail when the coin is tossed five times.
= There is not even a single tail.
i.e. all the outcomes are heads.
= 1/32 ; P(T) = 1 – 1/32 = 31/32
A. 37 ½ %
B. 60 %
C. 75 %
D. none of these
Explanation:
Let length = 100 m.
Breath = 100 m.
New length = 160 m.
New breath = x meters
Then, = 160 × x = 100 × 100
(or) X = (100 ×100)/160 × 125/2
Decrease in breadth = (100- 125/2) % = 37 ½ %
A. 600
B. 620
C. 500
D. 520
E. None of these
Explanation:
Let the number of children in the school be x. Since each child gets 2 bananas, total number of bananas = 2x.
2x/(x – 360) = 2 + 2(extra)
=> 2x – 720 = x => x = 720.
A. 22
B. 24
C. 30
D. 28
Explanation:
? = 844 – 7 2/5 of 110 = 844 – 37 * 22 = 30